Saturday 29 June 2019

BlueFlyVario_Bluetooth_USB_v12.2 released

The BlueFlyVario_Bluetooth_USB_v12.2 is a minor update to the previous version released a few years ago. The classic model of the Bluefly has a fancy new translucent blue case and is easier to assemble. Please read this post in conjunction with the release post for the BlueFlyVario_Bluetooth_USB_v12 to understand the changes.

Translucent Blue Case

The new translucent blue case is an upgrade on the sky blue case that has been used for the last few years. The new case includes the following improvements:

  • It incorporates stand-offs in the design, which makes the connection between the mainboard and the case more secure. 
  • Cutouts are very slightly larger. 
  • The lid is secured with different clips, which are much more secure than the older case. 

What is in the bag?

The v12 model of the BlueFly is supplied with the following components:
  • The BlueFlyVario_Bluetooth_USB_v12 mainboard. There is a small piece of neoprene covering the pressure sensor; glued at one end to hold it in place (do not remove it!)
  • The translucent blue case with four small screws (P1 screwdriver needed).
  • A 750 mAh singe cell Lithium Polymer battery.


Assembly is pretty simple and will take most people less than 5 minutes. However, if you would prefer not to touch a screwdriver, or you want your vario configured to your custom settings, you can order the simple assembly service.

The simpler assembly method refines the steps outlined in the initial release:

Step 1 - Initial Test

Before you put the board in the case, plug in the battery, press the button, and make sure you can hear the vario beep. Also, plug in a microUSB charging cable and make sure the red LED comes on.

Step 2 - Screw the board into the case 

The small self tapping M2.5x5mm P1 screws secure the board into the case as shown below. You really only need two screws on a diagonal, but there is no harm if your use all four. Don't drive the screws home to tightly or you will strip the stand-offs in the case. Just use enough pressure to ensure that the board is secure. 

Step 3 - Ensure the button is aligned 

The button should be aligned with the center of the cutout hole. If it is off center and touching the edge of the hole then the case will interfere with the proper operation of the button. If you need to adjust it unscrew the screws by one turn or so, just enough so you can move the board around, then tighten them again. 

Step 4 - Battery and close

Plug in the battery. Place it in the case, making sure not to place it on the end of the screws. Then close the case. There is no longer any need to use tape to keep the case closed (the new lid clips are much more secure), nor any need to secure the battery (it fits snugly). 

Step 5 - Check charging works

Plug in a microUSB cable to charge the vario. The red light should come on. Cables with longer tongues work better.  

Step 6 - Velcro and/or lanyard (optional)

Many pilots will put a small piece of velcro on the back of the vario to attach it to their flight deck (this is what I do). Others will drill some small holes in the case and attach a lanyard (I do not do this anymore). 

Next Steps

After install you probably want to connect to the BFVDesktop application to adjust settings, or connect to and Android or iOS device to experiment with different apps. See the software page for more information.